javascript getelementsbyclassname

The problem is not supported for getelementsbyclassname in JavaScript in IE 6/7/8.Then the need to simulate the getelementsbyclassname needs to take the classname attribute, which involves the getattribute problem in JavaScript.In IE 6/7, there is a bug for getattributeNeed to use ClassName to get the following:var node = document.getElementById ("test"); var nam

xTable of Contents [1] using [2]classlist [3] to extend the preceding wordsSince there are getElementById () and getElementsByTagName () methods, why is there no getelementsbyclassname ()? The id attribute, tag name, and class attribute have no merit or disadvantage. Finally, HTML5 new Getelementsbyclassname () method, due to the widespread use of the class name in the CSS layout, the method just hit the pa

Getelementsbyclassname () To find our tree menu (perhaps multiple) from a large stack of HTML code, we first implement a way to find a DOM node through classname: Getelementsbyclassname. This is a simple but practical extension of the browser's own DOM approach. This method has two parameters: Ele indicates which DOM node to look for (that is, only ele child nodes), classname indicates what classname must

Let's take a look at the code: (Supports multiple class queries and queries within a range) Copy Code code as follows: /* * Get the element collection based on the element clsssname * @param fatherid The ID of the parent element, default to document * @tagName the label name of the child element * @className className strings separated by spaces */ function Getelementsbyclassname (fatherid,tagname,classname) { node = Fatheriddocume

Getelementsbyclassname () To read a large number of HTML Code To find out the tree menu (maybe there are multiple), let's first implement a method to find the DOM node through classname: getelementsbyclassname. This is a simple but practical extension of the browser's own DOM method. This method has two parameters: ele indicates which Dom node is used as the root node (that is, only the child node of EL

Let's take a look. Code (Supports multiple class queries and queries within a certain range) Copy code The Code is as follows :/* * Obtain the Element Set Based on the element clsssname. * @ Param fatherid the ID of the parent element. The default value is document. * @ Tagname the label name of the sub-element * @ Classname A classname string separated by Spaces */ Function getelementsbyclassname (fatherid, tagname, classname ){ Node = fatherid do

Let's take a look at the Code: (Multiple class queries and queries within a certain range are supported)Copy codeThe Code is as follows:/** Obtain the Element Set Based on the element clsssName.* @ Param fatherId the ID of the parent element. The default value is document.* @ TagName the label name of the sub-element* @ ClassName A className string separated by Spaces*/Function getElementsByClassName (fatherId, tagName, className ){Node = fatherId do

Try{varA = Document.getelementsbyclassname ("CLA"); Console.log (a);}Catch(ex) {var array = []; for(vari = 0;i){ if(Document.body.childnodes[i].nodetype = = 1){ varName =Document.body.childnodes[i].classname; if(Name.search (/cla/)! =-1) {Array.push (document.body.childnodes[i]); }}} console.log (array);} The HTML feature can be used to get the corresponding class element. Here we can see that document.body.childNodes is constantly being used, so simple optimization

A script to get elements based on classname on the web today is recorded here for later use. Copy Code code as follows: var getelementsbyclassname = function (searchclass, node, tag) { if (docu Ment.getelementsbyclassname) { return document.getelementsbyclassname (searchclass) } else { node = node || Document Tag = Tag | | "*"; var classes = Searchclass.split (""), elements = (Tag = = "*" node.all)? Node.all:n

The querySelector () method and querySelectorAll () method in HTML5 are described in the previous articles. I don't know how you understand them? The querySelector () method returns the first element that matches the passed CSS selector; querySelectorAll () the method returns all elements that match the passed CSS identifier and is a NodeList object. After a brief review, I will share with you the getElementsByClassName method, a new method. As HTML4

Various implementation methods: Pure dom Generally, getelementsbytagname ("*") is used to retrieve all elements in the document, traverse them, and use regular expressions to find matching elements and put them in an array to return the results. Because ie5 does not support document. getelementsbytagname ("*"), use the branch document. All to prevent errors. The ultimate getelementsbyclassname SolutionThe author is Robert Nyman, which has been real

is sure to be very spirited in the future when the lower version of IE exits the market, it is best not to use this function directly at this moment, but we can simulate implementing this function.The code example is as follows:DOCTYPE HTML>HTML>Head>MetaCharSet= "Utf-8">Metaname= "Author"content= "http://www.51texiao.cn/" />title>Getelementsbyclassname () Usage details-ant tribetitle>Scripttype= "Text/javascript